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Atoms and Molecules — Science STD 9 — Question

Gujarat BoardEnglish MediumSTD 9ScienceAtoms and Molecules1 Mark
Question
Convert into mole. $12g$ of oxygen gas.
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Answer

$32g$ of oxygen gas $= 1$ mole. Then, $12g$ of oxygen gas $= 12/32$ mole $= 0.375$ mole.

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